A study indicates that​ 18- to​ 24- year olds spend a mean of 120 minutes watching video on their smartphones per month. Assume that the amount of time watching video on a smartphone per month is normally distributed and that the standard deviation is 10 minutes. Complete parts​ (a) through​ (d) below.   a. What is the probability that an​ 18- to​ 24-year-old spends less than 95 minutes watching video on his or her smartphone per​ month?   b. What is the probability that an​ 18- to​ 24-year-old spends between 95 and 135 minutes watching video on his or her smartphone per​ month?   c. What is the probability that an​ 18- to​ 24-year-old spends more than 135 minutes watching video on his or her smartphone per​ month?

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A: given datanormal distributionμ = 204σ = 55P(x>225) = ?

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Q: Exercise 06.25 (Normal Probability Distribution) b. What is the probability that a household in…

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Q: Part D please

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A: Standard deviations=σ=2.8532 k=3.25

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Q: 4. A car salesperson notes that she sells either 1, 2, 3, 4, 5 or 6 cars per week with equal…

A:

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A:

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A:

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Q: Tires that wear out bynothing miles will be replaced free of charge.

A: Solution:

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.